import axios from 'axios'
import {
  MessageBox,
  Message,
  Loading
} from 'element-ui'
import store from '@/store'
import {
  getToken,
  setToken
} from '@/utils/auth'
import qs from 'qs'
import config from '@/config'
import router from '@/router'

// create an axios instance
const service = axios.create({
  // baseURL: "/baseUrl", // url = base url + request url
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 0, // request timeout
})

let loading = null;



// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    // formData提交方式
    if (config.formData) {
      config.headers['content-type'] = 'application/x-www-form-urlencoded';
      config.data = qs.stringify(config.formData);
    }

    if (config.upload) {
      config.headers['content-type'] = 'application/x-www-form-urlencoded';
      config.data = config.upload;
    }

    // 是否开启全屏加载
    if (config.load) {
      loading = Loading.service({
        lock: true,
        text: "数据提交中.."
      });
    }

    // 过滤空参数
    if (config.data != null && typeof (config.data) == "object" && typeof (config.data.length) != 'number' && config.data.length != undefined) {
      let _data = {};
      for (const key in config.data) {
        if (config.data[key] != "" && config.data[key] != undefined && config.data[key] != null) {
          _data[key] = config.data[key];
        }
      }
      config.data = _data;
    }
    var token = getToken()
    if (token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['authorization'] = token
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {

    if (loading != null) {
      loading.close();
    }

    // // token存储
    // if (!store.getters.token) {
    //     setToken(response.headers.authorization)
    // }

    const res = response.data

    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 1000) {

      MessageBox.alert(res.msg || 'Error', "提示");

      //   Message({
      //     message: res.msg || 'Error',
      //     type: 'error',
      //     duration: 5 * 1000
      //   })

      if (res.code === 1001) {
        store.dispatch('user/logout').then(() => {
          router.push(`/login`)
        })
      }

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    if (loading != null) {
      loading.close();
    }

    // Message({
    //   message: error.message,
    //   type: 'error',
    //   duration: 5 * 1000
    // })

    MessageBox.alert(error.message || 'Error', "提示");

    return Promise.reject(error)
  }
)

export default service
